multi_run.rb in roda-3.51.0

- old
+ new

@@ -43,10 +43,13 @@
     # being the multi_route plugin keeps all routing subtrees in the same Roda app/class,
     # while multi_run dispatches to other rack apps.  If you want to isolate your routing
     # subtrees, multi_run is a better approach, but it does not let you set instance
     # variables in the main Roda app and have those instance variables usable in
     # the routing subtrees.
+    #
+    # To handle development environments that reload code, you can call the
+    # +run+ class method without an app to remove dispatching for the prefix.
     module MultiRun
       # Initialize the storage for the dispatched applications
       def self.configure(app)
         app.opts[:multi_run_apps] ||= {}
       end
@@ -65,11 +68,15 @@
           opts[:multi_run_apps]
         end
 
         # Add a rack application to dispatch to for the given prefix when
         # r.multi_run is called.
-        def run(prefix, app)
-          multi_run_apps[prefix.to_s] = app
+        def run(prefix, app=nil)
+          if app
+            multi_run_apps[prefix.to_s] = app
+          else
+            multi_run_apps.delete(prefix.to_s)
+          end
           self::RodaRequest.refresh_multi_run_regexp!
         end
       end
 
       module RequestClassMethods